Instruction 10-6
Two Samples Each of Size 25 Are Taken $\alpha$

question 69

Short Answer

Instruction 10-6
Two samples each of size 25 are taken from independent populations assumed to be normally distributed with equal variances. The first sample has a mean of 35.5 and standard deviation of 3.0 while the second sample has a mean of 33.0 and standard deviation of 4.0.
-Referring to Instruction 10-6,the critical values for a two-tailed test of the null hypothesis of no difference in the population means at the $\alpha$ = 0.05 level of significance are __________.

---

Definitions:

Placebos

Inert substances or treatments used in controlled experiments to test the efficacy of another substance or treatment.

Randomized

A method or process in which individuals or elements are selected randomly for participation in a trial or study to ensure fairness and objectivity.

Clinical Trial

A research study conducted with human volunteers to evaluate the safety and effectiveness of medical interventions.

Retrospective Study

A research approach that examines existing data or records to study outcomes that have already occurred.